Electric wire stretcher



D KNABENSHUE ELECTRIC WIRE STRETCHER Sept. 20, 1932.

Filed July 6, 19:51

2 Sheets-Sheet 1 mvsin-on rrroauzv Sept. D KNABENSHUE 1,878,859

' ELECTRIC WIRE STRETCHER Filed July 6, 1931 2 Sheets-Sheet 2 TIIJIIIIIIIIIIIIIIIII.lImiIIIIIIIIIII,

IIH

INVENTOR ATTORNEY Patented Sept. 20, 1932 e Lszees I DELLA KNABENSHUE, 0F

GRAFTON, WEST meme Ap imation filed m5 e, The object (if thisi'my pfese iti iverition, the prov sion of a truck earned telephbne Wife Stretcher, in" which a mast made u of t'elescepicaily aesegiated seetions" iscaused to raise 01 lower by pressure of air eolppressed in the tank by the motor of the trim]; for rziisirig the sections of'the mast there being alve ontrelled means f01" l W I, ering theseti'oiis, theouter section Carrying 2t pulleywheel evei which is directed the wires that are arranged QIl rolls carr ed by the'mzist in its" raised pbsition, means for N The invention tiltiii the mast and for holding the shame it desii' ed iii'clinil'tipiis and; Ih'eaiis earned by the t'ice' for this" purpose that may sii'cc essfully be. h y afid qmii ihe'fl' s ively" uiiders'toed from" a consideration of the" fenbwiiig" detailed dfesciiptieh wh n iaid in c'br'fne'ctibii with the accompanying di zui ings which foriii art of thezipplicgtid r with" the understandin however, that the df'thidi ziwiiigs nor to the precise construe;v tieii desribdfaiid, ther fore; sti'hbhange's =1 V V 1 I v Figiiie 2 "is 'a' seetionilvview apprbxi'mzitely QIi diiieiilai'ged s cle Uri th 1ii1e2 2 of Fig 111551; i K

Figiire?) is; an elevation f the lo er per tien ofthe' mist looking at a right aflgl tb thegshewiiig'in'Figure lg Figure & an enlarged sectional View appfdXirtizitkelYfen the 1ine'4"4 of FigureB, with the "oiitei' mast section fully extended. V

Figure "5 is ahbrizrital seetional" viety g a proximately en the 11116 5-5 of Fig l lle Figure 6 isa' 'sectienal iew approximateoiith line ofFigui'el,

F gure '7 Figure l is a side elevation of the inihre'iie ism "sectional view thrdii gh' the tween Whdse aims there is'j oiifiiale'd a gidved' 1 00 7 cable is trained under a grooved wheel 24 whose trunnions are mounted in the bifurcated end of a bearing member 25 which is pivotally secured to an upright support 26 carried by the truck body. The'cable 2.3 is directed from the sheave wheel 24 over another sheave wheel 25 whose trunnions are journaled in a' suitable bracket 26' secured to the top of the mastsection 7. The cable 23 is from thence directed into the mast section 7 and is securedtothe mast section 13 adjacent to the loWer and plunger endthereof.

Pivotally secured, as at 2 7,ftoqoi1e side of the truck'body 1 there is one of the closed ends ofa cylinder 28. The cylinder has arranged therein a piston head 29provided with a piston rod 30 which passesthrough apacking in the second closed end of the cylinder and which is pivotally secured to a bracket 31 on one side of the mastsection 7. Angularly disposed tubes 32, respectively leadingfrom a valve casing 33, are directed and communifcate with the ends of the cylinder .28. The valve casing 33 is centrally providedwith an outlet port 34 and has a pipe connection 135 with a substantially U-shap-ed pipe 36 whose ends communicate with both the'bottom and one side of the mast section 7 .1 .The valve 37' in the casing 33 is of substantially rectangular formation as disclosed by Figure but whose ends are rounded and the valve may be turned t; to direct air through eitherfof theftubes 32 into either endof the cylinder 28, permitting the air from the second end of the cylinder to find an outlet through theport 34 The valve 37 is hand operated and the air directed therefrom will influence the piston 29 to cause its rod 30 to swing the mast on the trunnions 6 to desired angles.

' Inplaces wherethe country clear and there are. not many wires crossing the road s the wire from the drum 22. is strung over the pulley'or sheave wheel 20, as disclosed by Figure lfofthe drawings. The mast is length ened on the truck until the top thereof isar ranged above the telephone poles. As the. truck moves along the mast is inclined, in a manner-as justdescribedpto cause the same to bearranged'ateitherthe right or the left of the telephone pole so that the wire drops onto the top of, the pole. The guy or stabilizingcablefsteadiesthe mast when the sections thereof are moved outwardly from each other. When there are. wires crossing the road and a w1re carried by the truck is to be strung above these wires the truck is stopped to hold the drum 'at aidesired'point, but if. desired,

the drum may be arranged on a cart orthe like which is fitted with bearings therefor. The wire 21 is hooked to 'a ring 37 on the end of a rod 38. The rod 38 has its sides provided With teeth 39, and these teeth are engaged by concaved and toothed jaws 40 carried on the outer ends of arched arms 41 which are pivot- I ally connected to'the ends of a substantially rectangular frame i2 that is horizontally supported on the outer end of the fork 19. The arms 41 are influenced toward each other 7 through the mediumof springs 43 and there are removable between the bars, lthat have depending arms 45. The

arms 41 spreader armsare connected to cables 46, respectively, andthesecables are wound around and secured to tubular members or drumst7'whose ends are ournaled totlie outstanding arms of substantially U+shapedbrackets48 which'are fixed to the opposite sidesof thern'ast section,

7. The drums have turning'wheels' 49 on their outer ends, and infthe'hollow drums there are springs 50 connected theretoin thev same manner as are the springs of a window shade roller and whereby the cables 46 are always under tension. When a.wireacross vtheroajd is reached theset of jaws adjacent thereto are released toprovide a passage for" the wire and thejaws are then returned to grip the rod. ,The second set'of jaws are released while thewire passesth'erethroug'h and thereafter again grip the rod. -Thewire from" thedrum is thus being strung above the wire.

that crosses the road. This operation is re-,

peated untilthe wire from the drum is strung to all of t-hfcrossingi wires. 7 By providing the truck with car wheels the apparatuscanj be used on} arailway} track and also the im-\ 'provement may be employed as a derrick by merely disconnecting the piston rod 30 from the bracket 31 and by connecting telescopic stay rods between the topof the mast and eye,

or bracket members '51 fixed on the sides of the truck asjdisclosedby Figure 1 of the drawings. In this instance the base 8 of the mast isswung to a'position ri'ghtangularly with respect to that disclosed by Figure 1 of the drawings so that the mast may be swung either forwardly or rearwardly on thetrun nions6. -V ,e v

It isbelieved that the foregoing description when read in connection with the drawings willfully and clearly set forth the simplicity of the construction and theadvantages there' of to those skilled in the'art to which the invention relates so, that further detailed description will not berequired. "Obviously I; do not wish tobe restricted to the precise 7 details. herein set forth and, therefore, hold. myself entitled to make such changes there;

from y as fairly fall within. the scope of what Iclaim. V

7 I-Iavingdescribed the'invention, I am;

In a device for the'rpurpose set forth, a-

motor driventruck, a ;tank thereon containing air under pressure therein, a mast which -is pivotally and revolubly supported on the truck and which includes a lower section, an intermediate section and an outer section, all of which are tubular and being telescopically received one in the other, means for introducing air from the tank into the lower mast section for expanding the mast, means for exhausting such air to permit of the telescop- 1 ing of the mast sections, a wire directing sheave on the outer mast, a frame supported above the sheave, oppositely disposed arched jaw carrying rods pivoted to the frame a toothed rod engaged by the aws, and having :3 a ring end for a wire, spring means influencing the arms toward each other, av spreader member between the arms, flexible elements connected to the spreader member and hand operated spring influenced drums around 1 which the flexible elements are trained and secured in bearings on the lower mast sections for the drums.

In testimony whereof I aflix my signature.

DELLA KNABENSHUE. 

